I made it over to Hoosac this past weekend. As planned, I came in from the east, taking Wiley Mountain Road west of West Hill Road (the Delorme map originally gave me the impression that it would stay West Hill the whole way). After passing most of the houses, the street narrows to just about a jeep road, and it was rough enough that I pulled over at the first pull out I came to, which turned out to be an overgrown field/logging yard. Conveniently enough, this put me within 0.54 of the summit. Even better, there was an old skidder road going into the woods there that was heading up in that direction. It's the only one I encountered along Wiley Mountain Road, and is very obvious. Following it up the mountain, it got me within 0.3 of the top before petering out at a blowdown. Then again, the woods on this mountain are so open that it was a really pleasant and straightforward bushwhack. En route to the canister, I passed over a false summit or two, and encountered a moose crashing through the trees. The actual high point is defined enough that the register was easy to find.
Just overall, it's a very pleasant mountain that's actually fun to bushwhack. Since it's covered with deciduous trees, I imagine there might even be views when the leaves are down, and must be a particularly lovely mountain to visit during foliage season.